Info2 / prog C

Info2 / prog C

University

5 Qs

quiz-placeholder

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Info2 / prog C

Info2 / prog C

Assessment

Quiz

Computers

University

Practice Problem

Hard

Created by

Yann Leboulanger

Used 2+ times

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Quel nom de variable est le mieux choisi :

int var1

int COMPTEUR

int entree

int sortir_pour_le_portA_du_microcontroleur

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Quelle instruction permet de forcer le bit 2 de x à 1 :

x = x | 2

x = x | (1 << 2)

x = x & (1 << 2)

x = x & 2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Quelle est la meilleur écriture pour forcer le bit TXEN de UCSRB à 1 :

UCSRB = UCSRB | 0x08

UCSRB = UCSRB | (1 << 3)

UCSRB = UCSRB | 1 << TXEN

UCSRB = UCSRB | (1 << TXEN)

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Quelle instruction permet de fixer le bit 2 de x à 0

x = x & ~(1<< 2)

x = x & (1<< 2)

x = x | (0<< 2)

x = x | ~(1<< 2)

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Quelle instruction permet de tester si le bit 2 de x est à 0

if (x == 0)

if ((x | (1 << 2)) == 0)

if ((x & (1 << 2)) != 0)

if ((x & (1 << 2)) == 0)